Filter presses for chemical processing; Filtering machines for chemical processing; Dust filters for vacuum cleaners; Dust filters and bags for vacuum cleaners; Power-driven cleaning device for industrial air pollution control equipment, namely, a device that produces high intensity impulse waves that loosen collected or impacted dust and debris without damaging the equipment; Dust collecting machines for chemical processing; Water pumps for filter presses; Components for machines and machine tools, grinding machines, material handling machines, food processing machines, chemistry processing machines and textile industry machines, namely, sand, chemical and reverse osmosis filters